<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		
		<script>
			
			var x=5;
			var y='5';
			//全等于===既判断内容又判断类型
			//全不等于!==既判断内容又判断类型
			if(x===y){
				document.write("成立");
			}
			else{
				document.write("不成立");
			}
		</script>
		
		
	</body>
</html>
